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Homework Help: Projectile motion?

  1. Oct 25, 2009 #1
    1. The problem statement, all variables and given/known data

    Chuck gives a horizontal speed v to a ball that then rolls off a lab bench y meters high. How long a time will it take the ball to reach the floor? How far from a point on the floor directlyt below the edge of the bench will the ball land? Calculate how long and how far for v=1.5 m/s and a bench height of 1.2 m.

    2. Relevant equations

    Vx=d/t? only horizontal component of velocity is relevant, right?

    3. The attempt at a solution
  2. jcsd
  3. Oct 25, 2009 #2


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    Homework Helper

    The question definitely involves both horizontal and vertical motion.
    Better write equations for the y part, too. Usually one for Vy and one for y suffice.
  4. Oct 25, 2009 #3
    hey kcc
    aight so when ur doing projectile motion try using this equation to find t:
    t = √(2y/g)
    and now that u have t u can use the formula V=x/t to find x or arrange it so that its x=vt
    :D et voila'
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